The part of the stem where a leaf arises is known as:

node

The correct answer is Option (3) - node

The part of the stem where a leaf arises is known as: Node

In botany, a node is the specific point on a stem where a leaf attaches. It is characterized by a slight swelling or joint-like structure where the leaf emerges from the stem. Nodes are important sites for the attachment of leaves, branches, and other lateral structures. They also serve as locations for the emergence of buds, which can develop into new leaves, flowers, or branches. The region between two nodes is called an internode.